Index sheet



June 4, 1940. A, A, TNT 2,203,511

INDEX SHEET Filed April 6, 1939 INVENTOR.

ATTORNEYS.

Patented June Y4, 1921()- Anthur A. Tait, Plainfield, N. J. Application Aprile, 1939, serial No. 266,296

4 claims.

This invention relates to improvements in index sheets and more particularly to a metal tab index sheet.

The use of a metal index tab upon a flexible index sheet is desirable for indexing loose leaf catalogues for they are indestructible, provide a firm linger grip tab; are easy to read; and are capable of interchangeably.receiving `different index labels. To directly attach the metal index tab to the flexible index sheet results in the pulling away of the tab and the tearing of the index sheet during ordinary handling.`

It is therefore the primary object of the invention to provide a novel means of reinforcing a flexible index sheet to prevent the pulling away of a metal index tab therefrom.

Another feature of the invention resides in a simple and inexpensive means of reinforcing the flexible sheet of a metal tab index sheet so as not to materially increase the cost of manufacture thereof.

Other features of the invention will be apparent as the following specification is read in conjunction with the accompanying drawing, in which:

Figure 1 is a perspective view of one form of my reinforced metal tab index sheet.

Figure 2 is an enlarged transverse sectional view on the line 2-2 of Figure 1.

Figure 3 is aperspective view of a modified form of my invention.

Figure 4 is a fragmentary plan view of a further modied form of the invention.

Figure 5 is an enlarged detail sectional view on the line 5-5 of Figure 4.

Referring to the drawing by reference characters, and at present to the form of the invention shown in Figures 1 and 2, the numeral I 0 designates my improved metal tab index sheet in its entirety which includes a rectangular sheet I I preferably constructed of linen, but it is understood that the same may be of any other exible material such as paper. One side edge of the sheet II is reinforced by linen tape I2 and this reinforced edge constitutes the loose leaf binding edge of the index sheet and is provided with the usual binding holes I3. The opposite side edge is designated by the numeral I4 and constitutes the indexing edge for the sheet II. Extending across one side of the sheet II at any desired location between the top and bottom of the sheet, is a reinforcing strip I5, the same being of a length greater than the Width of the sheet I I to provide an extension portion whichis folded over the index edge I 4 to a position fiat against (Cl. 12S-16.8)

the opposite side of the sheet II. This folded portion of the strip I5 may be termed a reinforcing flap I6 and is of a length to extend only part way across the width of the sheet II.

The reinforcing strip I5 is preferably of kraft I gummed stock so as to provide an adhesive bond between the reinforcing strip and the faces of the sheet II. The adhesive connection is designated Il in Figure 2 of the drawing. Attached to the reinforced portion of the sheet II is a metal index tab I8 which is formed of a single sheet of metal folded upon itself to provide a label receiving head I9, and a pair of spaced attaching tail fianges 2li- 20. The head I9 is provided with opposed Window openings 2I-2I which are closed by transparent Celluloid strips 22--22 for protecting and displaying the index label 23. The tail anges 20-20 straddle the folded portion of the strip I5 and embrace the strip I5 and flap I6. Eyelets or other like fasten:

thus preventing the accidental pulling away of I.)

the metal tab I3 and tearing of the sheet II.

` Indexes of the kind herein shown and described are generally used in connection with loose leaf catalogues and their binders, but it will be understood that the invention may be applied to other` types of indexes where reinforcement of the flexible rupturable. index sheets are associatedI with rigid indexing tabs.

In Figure 3 I have illustrated a further modified form wherein a thin sheet steel reinforcing strip I5'` is attached to an index sheet IIa by rivets or eyelets 21. The strip I5 is the equivalent to the gummed tape I5 and is folded around the index edge of the sheet in the same manner. The metal index tab I8 is secured to the reinforced portion of the index sheet in the same manner as hereinbefore explained and further explanation is not deemed necessary. p

In Figures 4 and 5 I have illustrated a further modification wherein the reinforcing strips 3l are formed from a folded-over strip and are `on opposite sides of the index sheet in the same manner as shown in Figures 1 and 2. Folded over the index edge of the sheet 30 andadhesively secured to each side thereof in overlapping relapulled upon to effect a turning of the sheet.

tion to the strips 3l is a linen shield 32. A small metal index tab 33 is provided and the fastening eyelets 34 pass through both folds of the linen shield 32, strips 3i and sheet 30. This linen shield reinforcement is used with a relatively small metal tab' 33 and prevents tearing away of the metal tab which is likely to occur in spite of the kraft paper reinforcing strips.

By extending the reinforcing strips i5, i 5', and 3l substantially across the entire Width of the index sheets, I prevent the sheets from being accidentally folded when the metal index tabs are The resiliency of the thin metal reinforcing strip l5 is such that should the index sheet be bent, the

metal strip I5' will serve to return the sheet to a f flat condition.

Having thus described the invention, what l' claim as new and desire to secure by Letters Pate ent of the United States is:

1.' An indexcomprising a flexible index sheet', a flexible reinforcing element flatlyV secnredto saidsheet and extending substantially entirely thereacross from the indexing edge thereof' to provide a reinforced portion extending inwardly from the indexing edge,y and a'metal index tab securedv to the reinforced` portion at tlie indexing edge of said sheet'.

2. An index comprisingr a exible index'sheet of rupturable material,A a flexible reinforcingfstrip atly secured to one side of said sheet and extending substantially thereacross from the indexing edge thereof to provide an elongated reinforced portion, a rigid 'index tab having an attaching portion overlying one end of the reinforcing strip, and fastening elements passing through said attaching portion, reinforcing strip and index sheet.

3. An index comprising a flexible index sheet of tearable material, a flat metal reinforcing element extending substantially across the entire Width of one face of said sheet from the indexing edge thereof, fastening means securing said reinforcing Aelement flat against said sheet, and-'a metal index tab secured to the reinforcing element4 and `said sheet at the indexing edge of the latter.

4. An` indexcomprising a exible index sheet of tearable material, a relatively thin flat metalv reinforcing strip extending substantially across the entireA Width ofY oneA face ofsaid sheet from the indexedge thereof, spaced fastening elements passing through the reinforcing strip andindex sheet for iiat'ly securing thexsamextogether., a metal index-tab positioned over the reinforcing strip at ythe index edge end; thereof, andrfastening elementsfpassingthrough? thev metal' index tab, reinforcing strips, andindexsheet.

' ARTHUR A. TAIT.v 

